Senior design engineer Work, Jobs in Portbury, Som (with Salaries)

Senior Nuclear Core Design Engineer
Holtec —Almondsbury
- £160,000 - £190,000 a year
- Doctoral degree
- Engineering
- Master's degree
- Annual leave
- Employee assistance programme
Quick apply
Senior AI Engineer
HGEM Ltd —Bath
- £65,000 - £70,000 a year
- Full-time
- Hybrid work
- Hospitality
- Azure
- English
- Profit sharing
- Work from home
Quick apply
13d
Senior Structures Engineer
Babcock International —Bristol
- Up to £65,981 a year
- Full-time
- Hybrid work
- Project management
- No degree
- Communication skills
- Annual leave
- Employee assistance programme
Senior Software Engineer
Volant Autonomy —Bath
- £50,000 - £70,000 a year
- Full-time
- Hybrid work
- English
- AWS
- APIs
- Employee stock purchase plan
- Annual leave
Quick apply
Senior Mechanical Design Engineer
Stirling Dynamics —Bristol
- £40,000 - £65,000 a year
- Engineering
- Travel
- Leadership
Senior Repair Design Engineer
Rolls-Royce —Bristol
- Full-time
- Hybrid work
- CAD
- No degree
- Employee discount
Senior Engineer - Structures
Monmouthshire County Council —Usk
- £41,771 - £46,142 a year
- School
Software Engineer (Mid and Senior Levels)
One Big Circle —Bristol
- £36,000 - £70,000 a year
- Full-time
- AWS
- C++
- Machine learning
Quick apply
Senior/Staff Design for Test Engineer
OLIX —Bristol
- £321,000 a year
- Full-time
- Scripting
- AI
- Python
3d
Senior Software Engineer, Architecture & Algorithms
KLA —Newport
- Full-time
- Doctoral degree
- Master's degree
- C++
- Annual leave
5d
Structural Design Engineer (Lead & Senior)
Airbus Operations Limited —Bristol
- Full-time
- Hybrid work
- Travel
- Free parking
Senior/Staff Digital Design Engineer
OLIX —Bristol
- £194,000 a year
- Full-time
- AI
- Python
Senior Engineer
Kier Group —Cardiff
- Full-time
- AutoCAD
- Civil engineering
- Travel
Senior Process Engineer
BAE Systems —Glascoed
- Up to £57,824 a year
- Hybrid work
- Analysis skills
- Travel
- Employee discount
11d
Senior Software Developer
Advanced Secure Technologies —Saint Mellons
- £55,000 - £65,000 a year
- Full-time
- Azure
- SQL
- Mentoring
- Free parking
- Employee assistance programme
Quick apply
Senior Infrastructure Engineer
OFGEM —Cardiff
- £52,397 - £62,699 a year
- Full-time
- Azure
- DevOps
- Presentation skills
- Annual leave
- Flexible schedule
6d
Senior/Staff Analog Design Engineer - SerDes
OLIX —Bristol
- £317,000 a year
- Full-time
- Doctoral degree
- Engineering
- Master's degree
3d
Senior Infrastructure Engineer (DV Security Clearance)
CGI —Chippenham
- Full-time
- System design
- Linux
Quick apply
Senior Structural Engineer – Naval Ship Design
NAVANTIA UK —Bristol
- Full-time
- Hybrid work
- Spanish
- CAD
- Engineering
Quick apply
Senior Infrastructure Engineer
Sopra Steria —Newport
- Up to £55,000 a year
- Annual leave

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Senior Nuclear Core Design Engineer

Holtec -
Almondsbury

Quick apply

Job details

£160,000 - £190,000 a year

Benefits

Annual leave
Employee assistance programme

Qualifications

Doctoral degree
Engineering
Master's degree
Analysis skills
Bachelor's degree
Physics
Scripting
Technical writing
Communication skills
Python

Full job description

The Senior Nuclear Core Design Engineer supports the design, analysis, and licensing of the SMR‑300, an integral pressurized water reactor small modular reactor. This role plays a critical part in core physics analysis, fuel management evaluations, and preparation of nuclear licensing documentation in support of ongoing SMR‑300 development. The Principal Nuclear Core Design Engineer will join an established and growing core design and nuclear analysis team and is expected to independently execute complex technical analyses, benchmark methods and models, clearly document results, and mentor junior engineers in analysis techniques and technical documentation. The ideal candidate brings deep reactor physics expertise, strong analytical and technical writing skills, and experience supporting NRC licensing activities.

Location: Flexible — role may be based in Camden, NJ; Jupiter, FL; Cranberry, PA; Madrid, Spain; Bristol, UK; or Kyiv, Ukraine

Primary Responsibilities:

Perform reactor core design and reload analyses supporting steady‑state operation, transient evaluations, and safety analyses
Develop, validate, and maintain core physics models, including lattice and nodal calculations
Generate physics parameters and cross‑section data for use in safety and system analyses
Conduct benchmarking and code qualification activities against experimental data and industry standards
Support fuel cycle optimization, reactivity control strategies, and long‑term core performance evaluations
Prepare detailed technical analyses and reports for internal use and external regulatory submittals
Contribute to licensing documentation, including PSAR, FSAR, and responses to NRC Requests for Additional Information (RAIs)
Participate in technical discussions with cross‑functional internal teams, external partners, clients, and the U.S. Nuclear Regulatory Commission
Mentor and provide technical guidance to junior engineers on analysis methodologies and documentation standards
Support continuous improvement of core design tools, processes, and technical documentation practices

Requirements:

Eligibility to work under U.S. Department of Energy 10 CFR Part 810 export control regulations
Bachelor’s degree in Nuclear Engineering, Physics, or a closely related field with 10+ years of relevant experience
- OR Master’s degree with 8+ years of relevant experience
- OR PhD with 6+ years of relevant experience
Demonstrated experience in reactor core physics, fuel management, and neutronic analysis
Proficiency with industry standard core analysis tools such as CASMO/SIMULATE
Familiarity with NRC licensing processes, including NUREG 0800 Chapter 4 and Chapter 15 requirements
Strong technical writing, documentation, and communication skills
Ability to work independently while contributing effectively within multidisciplinary teams
Proficiency with industry‑standard analysis tools such as SCALE, MCNP, or equivalent codes
Experience with reactor pressure vessel fluence evaluations and understanding of radiation damage mechanisms
Programming or scripting experience (e.g., Python) to support analysis automation and data processing

A Generation Ahead by Design™
Investing in people who power the future.

We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self…your health, your future, and your career growth. This includes:

Compensation:

Compensation for U.S.-based roles range from $160,000 to $190,000 annually and is determined by skills and experience.
Compensation for roles based outside the U.S. will be set in accordance with local market practices and applicable currency requirements.

Benefits:

Benefits for U.S.-based employees include a comprehensive total rewards package designed to support health, wellbeing, and long-term financial security, including:
Medical, dental, and vision coverage with generous employer contributions and Day 1 eligibility
FLEX program with hybrid work opportunities for eligible roles
401(k) retirement plan with up to a 5% company match and immediate vesting
Paid time off and 11 paid holidays
Wellness and commuter programs
Company-paid life and AD&D insurance
Education assistance and professional development support
Employee Assistance Program and optional voluntary benefits

Benefits for employees based outside the U.S. will vary by country and will be provided in accordance with local market practices, statutory requirements, and regional norms.

If you’re driven to solve meaningful challenges and make a lasting impact, we invite you to build your career at Holtec—a generation ahead by design™.

Quick apply

Refine Your Search

senior design engineer jobs in portbury, som

Senior Nuclear Core Design Engineer

Senior AI Engineer

Senior Structures Engineer

Senior Software Engineer

Senior Mechanical Design Engineer

Senior Repair Design Engineer

Senior Engineer - Structures

Software Engineer (Mid and Senior Levels)

Senior/Staff Design for Test Engineer

Senior Software Engineer, Architecture & Algorithms

Structural Design Engineer (Lead & Senior)

Senior/Staff Digital Design Engineer

Senior Engineer

Senior Process Engineer

Senior Software Developer

Senior Infrastructure Engineer

Senior/Staff Analog Design Engineer - SerDes

Senior Infrastructure Engineer (DV Security Clearance)

Senior Structural Engineer – Naval Ship Design

Senior Infrastructure Engineer

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